1206786 has 32 divisors (see below), whose sum is σ = 2810880. Its totient is φ = 338256.

The previous prime is 1206781. The next prime is 1206791. The reversal of 1206786 is 6876021.

1206786 = 113² + 114² + ... + 171².

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1206781) and next prime (1206791).

It is a Curzon number.

It is a plaindrome in base 13.

It is a zygodrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (1206781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2235 + ... + 2721.

It is an arithmetic number, because the mean of its divisors is an integer number (87840).

2^1206786 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1206786, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1405440).

1206786 is an abundant number, since it is smaller than the sum of its proper divisors (1604094).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1206786 is a wasteful number, since it uses less digits than its factorization.

1206786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 1206786 is about 1098.5381195025. The cubic root of 1206786 is about 106.4657916538.

The spelling of 1206786 in words is "one million, two hundred six thousand, seven hundred eighty-six".